Subject: Re: [stella] Star Fire 2600: Star Background From: "Andrew Davie" <adavie@xxxxxxxxxxx> Date: Thu, 1 Aug 2002 20:54:18 +1000 |
Most impressive, Manuel :) I've had a brief peek at the code - don't understand it yet, but here's a couple of things... BPL DontSwap ; Y: All right! BPL DontSwap ; Y: All right! You have a duplicate line in Flickersort ; Two lines *wasted* with repositioning... DEC vline DEC vline Consider instead dey dey sty vline The latter takes 7 cycles. Your current version takes 10 cycles. Same # bytes, of course. Anyway, an interesting kernal. Keep up the good work! Cheers A ----- Original Message ----- From: "Manuel Polik" <cybergoth@xxxxxxxx> To: <stella@xxxxxxxxxxx> Sent: Thursday, August 01, 2002 9:31 AM Subject: [stella] Star Fire 2600: Star Background > Hi there! > > Ok, as promised, here's finally a binary with some star > background, using an adopted technique which I analysed > by studying the code from Earth Dies Screaming. > > Please ignore the increasing stars flicker towards the > right edge of the screen, I'll *time* most of that away, > as soon as I'm done with adding features to the kernel. > Unlike my first assumption, flicker can't be totally > avoided, since there's no way to enable the ball during > a repositioning line. > > I've still a few cycles left (~6 on each line, + one STA > WSYNC eventually) so I'm positive at the moment about > having non-mirrored sprites, which'd allow me adding the > mothership in its original fashion. > > Greetings, > Manuel > ---------------------------------------------------------------------------------------------- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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